Home / 398,689,565.10-598,034,347.65-393,314,793.90

Finding the Fourth Proportional to 398,689,565.10, 598,034,347.65 and 393,314,793.90

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Solution

The fourth proportional to 398,689,565.10, 598,034,347.65 and 393,314,793.90 is: 589,972,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,689,565.10 : 598,034,347.65 = 393,314,793.90 : x
  2. Step 2: Convert to fraction form
    398,689,565.10/598,034,347.65 = 393,314,793.90/x
  3. Step 3: Cross multiply
    398,689,565.10x = 598,034,347.65 × 393,314,793.90
  4. Step 4: Simplify right side
    398,689,565.10x = 235,215,756,191,080,672
  5. Step 5: Solve for x
    x = 235,215,756,191,080,672/398,689,565.10
  6. Step 6: Final answer
    x = 589,972,190.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.